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tatiyna
3 years ago
9

A newspaper ad includes a telephone number 1-555-dial vsw. How many seven letter arrangements are possible for the phone number

using the 26 letters of the alphabet of no letter is ised more than once? Express your answer using scientific notation.
Mathematics
1 answer:
trapecia [35]3 years ago
7 0
Let u be the set of all words containing 7 letters(26 letters to the power 7)
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What value of x would result in the numerical value of zero in the expression 7+x+(−10) ?
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Answer:

3

Step-by-step explanation:

7 plus three is 10, adding -10 to that equals zero.

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Leviafan [203]

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Step-by-step explanation:

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6 0
2 years ago
I built a storage shed in the shape of a rectangular box on a square base. The material that I used for the base cost $4 per squ
Jobisdone [24]

Answer:

\frac{a(450-8a^2)}{4}

is the volume in terms of side a

Step-by-step explanation:

Given that you I built a storage shed in the shape of a rectangular box on a square base. The material that I used for the base cost $4 per square foot, the material for the roof cost $2 per square foot, and the material for the sides cost $2.50 per square foot; and I spent $450 altogether on material for the shed.

Let a be the side of square and h be the height

Total cost of materials = cost for floor + cost for roof + cost for sides

= area of floor (4) + lateral area (2.50)+roof area (2)

=4a^2+4ah+4a^2\\=8a^2+4ah = 450h = \frac{450-8a^2}{4a}

Now coming to volume

Volume = V = lbh = a^2 h\\= a^2*\frac{450-8a^2}{4a} \\=\frac{a(450-8a^2)}{4}

7 0
3 years ago
NEED HELP ASAP! WILL GIVE BRAINLIEST
Tom [10]

Answer:

Part A

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0.2 x + 1 = x

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0.2 x + 1 = x

0.8 x = 1

x = 1 : 0.8 = 1.25 liters

Milk

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4 0
3 years ago
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